Smallest odd k>n such that k | n^k + n, or 0 if n=2^m.

Terms

a(0) =1a(1) =0a(2) =0a(3) =15a(4) =0a(5) =1565a(6) =111a(7) =35a(8) =0a(9) =123a(10) =365a(11) =671a(12) =15a(13) =185653a(14) =259a(15) =85a(16) =0a(17) =4369a(18) =39a(19) =247a(20) =800005a(21) =39a(22) =55a(23) =115a(24) =1731a(25) =85a(26) =221a(27) =135a(28) =35a(29) =105821